Ugh confused

My Ava cycle bracelet just came in the mail, so I’ve used it for 2 nights. That obviously doesn’t seem like it would be enough time

To gather data and tell me when my fertile window is. BUT after putting in my past cycle, it immediately said I was in peak fertility. I understand it may say that at first and then adjust as it gets more data, but I don’t want to miss any crucial days. I also took an opk test yesterday and this morning. They both had faint lines, so now I’m even more confused because according to glow, I shouldn’t be ovulating for 5-7 more days. Last month I took the opk tests I got two clear negatives and then a very clear positive, so I’m confused why I got faint lines this time. My last period was Nov 15, so not that long ago, but also a week later than planned. Anyone have ANY ideas/thoughts that might help me make sense of it all. I don’t want to have missed any crucial periods.